3-Pyridine methanol/ethanol structure

Reduction of spiradine A with sodium borohydride in methanol at room temperature afforded spiradine B. Oxidation of the latter with Cr03 in pyridine regenerated spiradine A. Hydrolysis of spiradine C with potassium hydroxide in ethanol yielded spiradine B. Treatment of spiradine A with acetic anhydride in pyridine gave an O-acetate (156) and an A-acetate (157). The structures of these acetylation products were based on IR and H-NMR data. When treated with methyl iodide in methanol, spiradine A gave a... 

Tables III-V record melting points (or boiling points) and specific rotations of those carbohydrates which are reviewed in this article, which have an established structure, and which have not been dealt with before in this Series. Also, all standard derivatives reported for the compounds are included. The abbreviations for the solvents in which the specific optical rotations were determined are as follows A, acetone C, chloroform D, dioxane E, ethanol M, methanol P, pyridine and W, water.

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